Top 5
EPFL student association
Capturing CO₂ directly from the atmosphere
We are a student association building a carbon capture prototype from low-cost materials and with minimal energy, and exploring how to reuse or store the CO₂ we capture.
- 40student members
- 5active sub-teams
- 5prototypes built
- Top 5OpenAir Carbon Removal Challenge 2025
Our technology
Two modules, one stream of almost pure CO₂
Astérix uses adsorbents to pull CO₂ from ambient air, concentrating it from about 400 ppm to around 1%. Idéfix then filters this flow through graphene membranes one atom thick, reaching up to 95% purity.
Both technologies come from EPFL labs we work with.
Discover the technology
Achievements
Recognised internationally
Top 100 worldwide
XPRIZE Carbon Removal
7th of 42 teams
EPFL Sustainable Innovation Challenge
The team
Students from every section
Chemists, engineers, physicists and more, from first-year bachelor to PhD, working in five sub-teams.
Meet the teams